Stop-valve.



Patented July I, I902.

J. A. ELLISON.

S T 0 P V A L V E. (Application filed Nov. 26, 1901.;

(No Model.)

Flt. 3.

Fl El- E.

. lNVE/VTOR {7 Wax/W A Allorney m: mums wrrcas co. moroumu, WASHINGTON,n. c

UNITED STATES- PATENT OFFICE.

JAMES A. ELLISON, OF WVILMINGTON, DELAWARE.

ST O P'-VA LV E.

SPECIFICATION forming part of Letters Patent No. 703,564, dated July 1,1902.

Application filed Novemher Zfi, I901. Serial No. 83,722. (No model.) v

To all whom it may concern:

Be it known that 1, JAMES A. ELLIsoN, a citizen of the United States,residing at Wil mington, in the county of Newcastle and State ofDelaware, have invented "certain new. and useful Improvements in Stop-Valves;. andl do hereby declare the following to be a full,

clear, and exact description of-the invention,

hereinafter fully described and claimed.

In the drawings, Figure 1 is a vertical longitudinal section through thevalve. Fig. '2 is a plan view of the valve Fig. 3 is an end view of thevalve. 7

A is the casing of the valve, and B is the plug, which is journaled inthe casing A in the usual manner. The casing is provided with pipeconnections a, and the plug has a passage 1), which establishes aconnection between the pipe connections when the valve is turned to theopen position.

0 is a slidable springactuated bolt arranged in a chamber D, which isformed integral with the casing A and arranged longitudinally aboveoneof the pipe connections or branches a. A shield c is formed at oneend of the chamber D for '-the upper portion of the plug to bear.against.

E is a hole formed transversely through the upper part of theplug on alevel with the chamber D, and the spring 0 behind the bolt C presses thebolt into engagement with one end portion of the hole E whenever theplug is turned so as to place that end of the hole opposite the chamber.The hole E is arranged crosswise of the passage bin the plug, so thatwhen the plug is locked to the casing by the bolt the valve is in aclosed position.

F is a keyhole-plug which is fitted into the opposite end portion ofthe'hole E and provided with a keyhole f. This keyhole f has grooves,corrugations, or wards of such apuse. only of a specially formed key.'key is inserted into the keyhole and is used ment with the hole E.revolved whilethe bolt is pressed back by proved. construction as shallpermit of the This topress the bolt backward out of engage- The plug ispartially the key, andthe key is then withdrawn from the keyhole. H

The valve can be closed as often as desired without looking it byturning the plug onehalf around from the position shown in Fig.

'1. This valve is specially intended as a stopvalve for gas-consumersbetween the gas-me? ter and the main pipe in the street. valve isnormally open, and the keyhole is concealed and protected by the shieldc. When the meter is to be repaired, the valve can be closed withoutlooking it; but when the gas-supply is to be cut off for non-payment ofgas-bill the plug is turned to the position shown in Fig. land can onlybe unlocked by the use of the proper key, which remains in thepossession of the gas company.

What I'claim is,

1. The combination, with a-valve-casing, and a plug journaled thereinandprovided with a single hole formed transversely through its upper part,of a spring-actuated boltcarried by the saidcasing and engaging Thiswithone end portionlof'thesaid' hole, and a keyhole-plug-in the otherend of the said hole, substantially as set forth.

2. The combination, with a valve-casing provided with a keyhole-shieldat its top, and a plug journaled in the said casing and provided with aholein its upper part, of a springactnated bolt carried by the saidcasing and engaging with one end portion of the said hole, and akeyhole-plug closing the other end of the said hole and working againstthe said shield and the end of the bolt, substantially as set forth.

In testimony whereof laffix my signature in presence of two witnesses.

JAMES A. ELLISON.

Witnesses: p

D. J. KENNEALLY, W. FRANK BAILEY.

